Theophilus Cazenove, or Theophile Cazenove (13 October 1740 - 6 March 1811), was a Dutch financier and one of the agents of the Holland Land Company.
Life and career 
He was born in Amsterdam, as the son of Théophile Cazenove and Marie de Rapin-Thoyras, French/Swiss Huguenots. His father was a merchant and banker on Bordeaux, Saint Petersburg, Archangelsk, Stockholm and the West-Indies. In 1759 he lost four ships loaded with sugar and coffee, which were taken by a Bristol privateer, on their way back. In 1760 he gave up his business and his sons Charles and Theophile stepped in the company. In 1763, Theophile married Margaretha Helena van Jever, the daughter of a tradesman on Russia, and a member of the vroedschap. Cazenove spent his early career in commercial transactions in France and Russia, but went broke in 1770. In the same year his portrait was painted by Jean-Baptiste Perronneau. After the death of his father-in-law he was involved in a plantation in Surinam. In 1788 he collaborated with Étienne Clavière and Jacques Pierre Brissot, who both shipped in for the United States.
In November 1789 Cazenove was retained by Pieter Stadnitski to travel to the United States to act as an investment agent for Stadnitski and other Dutch investors (Nicolaas and Jacob Van Staphorst, Pieter & Christiaen Van Eeghen, and Ten Cate & Vollenhoven). Casenove settled in at Market Street (Philadelphia), where he dealt with Robert Morris (financier); his fellow-traveller Gerrit Boon later went north. Boon believed that harvesting maple syrup could be a year-round activity, so slavery on the sugar plantations could be avoided.
In 1792 Cazenove invested his clients' money at first in development bonds issued by the new states and the federal government after Alexander Hamilton promised to fully pay the debt. Another venture included investing in large tracts of undeveloped land in Genesee County, New York, which included the Holland Purchase. In order to implement these large and difficult purchases (sometimes complicated by the claims of Indians), he employed the advisory services of Hamilton and later Aaron Burr.
Cazenove lived well as a "grand seigneur" and was known for his extreme carelessness. His business dealings in maple syrup and canals were not particularly successful and the investors barely made any profit, even losing money in the Pennsylvania land dealings which he organized with James Wilson. He was also hard pressed to account for funds that were under his control. Around those days he helped his cousin from Geneva to settle in Philadelphia. Alexander Baring wrote: ‘Cazenove is a sad dirty fellow and does all the mischief he can’. In 1798 he hired Joseph Ellicott  but Paolo Busti became his successor.
In 1799, Cazenove returned to Europe even though he had become an American citizen in 1794. Casanove went to Amsterdam, where he started to archive purchase of land for the financiers. He left the employment of the Dutch investors in 1802 and sought a position under Charles Maurice de Talleyrand-Périgord, who he had met in Philadelphia in 1795, when also Talleyrand invested in land purchase. Cazenove died in Paris in the Rue du Bac.
- Miscellaneous correspondence, containing a variety of subjects, relative to ... by Benjamin Martin 
- Musée des Arts décoratifs, Lyon
- New travels in the United States of America: including The ..., Volume 1 by Jacques-Pierre Brissot de Warville,Étienne Clavière 
- Amsterdam City Archives on the Holland Land Company
- The Holland Land Company. Investing in Land in the Nascent United States (Lukas Ligtenberg) The Low Countries - 2007, nr 15, pp. 279-281 
- The great American land bubble by Sakolski, A.M
- Papers, 1791-1852, bulk 1792-1796
- Cazenove journal, 1794: a record of the journey of Theophile Cazenove through New Jersey and Pennsylvania 
His correspondence along with the records of the Holland Land Company are held at Amsterdam's municipal archive, the Amsterdam City Archives.